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Test Code MAL24 Albumin, 24-Hour Urine with Creatinine

Additional Codes

Epic: LAB13010

Quest: 15281

Specimen Required

Patient Preparation: Exercise within 24 hours, infection, fever, congestive heart failure, marked hyperglycemia, and marked hypertension may elevate urinary albumin excretion over baseline values.

Specimen Type: Urine

Collection Container/Type

Preferred: Unpreserved 24-hour urine

Acceptable: Quest Urinalysis transport tube (yellow-top, blue fill line, preservative tube)

Submission Container/Tube: Plastic vial

Specimen Volume: 5 mL

Collection Instructions: 

  1. Collect urine for 24 hours.
  2. Keep specimen refrigerated during collection.
  3. Mix well before taking 5-mL aliquot.
  4. Specify total volume on container & requisition or electronic order.

Specimen Minimum Volume

2 mL

Specimen Stability

Room temperature: 7 days

Refrigerated: 7 days

Frozen:- 28 days

Reference Range

Albumin, 24 hour urine <30 mg/24 h
Albumin, 24 hour urine <20 mcg/min


Creatinine, 24-Hour Urine

<3 Years Not established
3-8 Years 0.10-0.80 g/24 h
9-12 Years 0.20-1.40 g/24 h
13-17 Years 0.40-1.90 g/24 h
>17 Years 0.50-2.15 g/24 h


The ADA defines abnormalities in albumin excretion as follows:

Category Result (mg/24 h) Result (mcg/min)
Normal <30 <20
Microalbuminuria 30-299 20-199
Clinical Albuminuria ≥300 ≥200

The ADA recommends that at least two of three specimens collected within a 3-6 month period be abnormal before considering a patient to be within a diagnostic category.

Rejection Due To

Acid preserved urine

Day(s) and Time(s) Performed

Daily

Report Available

1 day

Clinical Significance

Albumin excreted in the urine (Microalbumin) is a sensitive marker of Nephropathy. It is used to screen for early renal disease in diabetic patients.

Method Name

Turbidometric

CPT Code(s)

82043, 82570

Performing Laboratory

Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

Includes

Albumin, 24-hour urine

Creatinine, 24-hour urine

Aliases

Microalbumin

Lab Processing Instructions (Lab Use Only)

  1. Measure the total volume of the specimen.
  2. Mix the specimen well.
  3. Order 24URN in Soft and enter prompted information.
  4. Aliquot specimen into platic vial.

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